In October, Janesville typically sees daytime highs of 16.6°C and overnight lows around 4.4°C. Compared to the annual average high of 13.9°C, October runs +2.7°C.
October in Janesville averages a daytime high of 16.6°C and an overnight low of 4.4°C.
October runs +2.7°C compared to Janesville's annual average high of 13.9°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 16.6°C and cooler evenings around 4.4°C.